Self-releasing rope hitch



NOV. 2, 1948.v Q, M, 5K|BSTED 2,452,796'

SELF-RELEASING ROPE HITCH FledNOv. l5, 1945 Patented Nov. 2, 1948 UNITED STATES PATENT OFFICE 2 Claims. i

My invention as described herein, and illustrated in the accompanying drawings, consists of a rope hitch, an object of which is to provide means whereby a rope connecting two pieces of farm machinery will automatically release itself from one or the other thereof .should the pieces become detached from one another.

Another object of my invention is to provide a spring controlled rope hitch.

A further object of this invention is to provide a spring controlled rope release having an adjustable tensioning device.

Another object of my invention is to provide a double ring connection between a rope and rope hitch.

Other features and advantages will become more readily apparent from the following description and the drawings in which:

Figure l is a diagrammatic View illustrating one application ci my invention,

Figure 2 is an elevation of my hitch,

Figure 3 is a longitudinal sectional view thereof, and

Figure l is plan view of the device.

Figure 5 is an elevational view of a lever handle used for raising the link and for causing the irmction of the 'trip rope.

Figure 6 is an elevational view of the assembled portions of lever handle and link as noted for Figure 5.

In the accompanying drawings, and in the following specihcation, the same reference characters are used to designate the same parts and elements throughout and in which lil, refers to my invention in its entirety and li, indicates a rigid metal strap provided with intermediate side wings l2 and a reduced rear end S4, with apertures l5 and it, whereby the device may be bolted to the seat il, of a tractor I8.

Projecting through a here i9, in the plate H, intermediate oi its ends is a bolt 2S, which also projects through aligning bore 2l, in a jaw member $22, heid against the plate ll, by means of a tensioning spring 23, coiled upon the bolt and secured thereto by a Washer 2d, seated upon the tensioning nut 2E, on the threaded end of the bolt.

The mem er 22, is provided with an inner arcuate rocker end 2d., which is reduced in width and Seats operatively between said Wings whereby member 22, is held in true alignment with plate il, and against pivotal movement upon the bolt 2li. The forward end 2l', of member 22, is provided with a transverse groove 28, adapted to accompanying illustrative (Cl. 28B-150) receive the enlarged ring end it, ci a link 3i?, intermediately having its sides 3l and 32, pressed in formino' the ring 2d, and an outer reduced ring 33, to which a trip rope Sli, is attached. The outer terminals of both members ll and 22, are turned away from one another to provide lips 35 and 36, to permit the ring 29, to be pushed in between the normally contacting bite portions 3i and 38, ci said members il and 22.

Referring to Figure 5 of the drawings All is a lever handle, the lower end of kfwlflic.. forms a jaw fil, to which is connected by a bolt 2, another jaw t3, both having slight parallel grooves ed and t5, transversely of the jaws and which are adapted to grip the intermediate portions 3l and 32, whereby the lever will be held in nxed vertical position upon said link 39, whereby the crank end 55, when pulled down will raise the link and cause the functioning of the trip rope 3. in this case the straight inner end 2Q', of ring 29, will act as a hinge,

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding or the invention after considering the description in connection with the drawings. Therefore, a more lengthy descrip tion is regarded as unnecessary,

Changes in shape, size and rearrangement of details and parts such as come within the purview of the invention claimed may be resorted to, in actual practice, if desired.

Having .now described my invention, that which I claim as new-rand desire to procure by Letters Patent is:

l. For use in tractor and implement assemblies, a hitch comprising a pair of plates rcckingiy engaging each other substantially medialiy, a pivot pin extending through said plates at substantially the medial points thereof, spring means on said pin for resiliently biasing plates toward each other, jaw members at one pair of ends of said plates, cam surfaces on 'the opposite pair of plate ends roclaingly engaging each other, longitudinal guide rails on a predeu termined plate receiving the other plate therebetween.

2. A tractor hitch comprising a flat plate having an arcuate end portion, guide rails on said nat plate, a curved plate having an arcuate end portion cooperating with said first mentioned end portion, a bight in said curved plate cooperating with said iiat plate to form a latch, a curvilinear section on said curved plate engageable with said flat plate between said guide rails, a pivot pin extending through said ilat plate and 3 4 the curved plate at substantially the inception UNITED STATES PATENTS of said curvilinear section, spring means on said pin for biasing said plates toward each other. Number Name Date OLE MARTIN SKIBSTED. 1,582,994 SIIIOII Sept. 4, 1928 5 2,370,232 Creekbaum Feb. 27, 1945 REFERENCES CITED The following references are of record in the le of this patent: 

